J/AJ/146/141ivo://CDS.VizieR/J/AJ/146/141doi:10.26093/cds/vizier.51460141CDSVivas A.K.Mateo M.2017-11-28T13:21:41Z2014-07-23T07:51:33ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frgalaxiesvariable-starsvisible-astronomybroad-band-photometryinterstellar-reddeningWe report the detection of 388 pulsating variable stars (and some additional miscellaneous variables) in the Carina dwarf spheroidal galaxy over an area covering the full visible extent of the galaxy and extending a few times beyond its photometric (King) tidal radius along the direction of its major axis. Included in this total are 340 newly discovered dwarf Cepheids (DCs), which are mostly located ~2.5mag below the horizontal branch and have very short periods (<0.1days), typical of their class and consistent with their location on the upper part of the extended main sequence of the younger populations of the galaxy. Several extra-tidal DCs were found in our survey up to a distance of ~1{deg} from the center of Carina. Our sample also includes RR Lyrae stars and anomalous Cepheids, some of which were found outside the galaxy's tidal radius as well. This supports past works that suggest that Carina is undergoing tidal disruption. We use the period-luminosity relationship for DCs to estimate a distance modulus of {mu}_0_=20.17+/-0.10mag, in very good agreement with the estimate from RR Lyrae stars. We find some important differences in the properties of the DCs of Carina and those in Fornax and the LMC, the only extragalactic samples of DCs currently known. These differences may reflect a metallicity spread, depth along the line of sight, and/or different evolutionary paths of the DC stars.2013AJ....146..141Vhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/146/141CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/649/201 : Velocities and Washington photometry in Carina (Munoz+, 2006)J/AJ/131/895 : Stars in the Carina dwarf spheroidal galaxy (Koch+, 2006)J/AJ/130/2677 : Stars in the Carina dSph galaxy field (Majewski+, 2005)J/AJ/126/197 : The Carina projects. I. Bright variables (Dall'Ora+, 2003)J/AJ/115/1840 : BV photometry in Carina dwarf galaxy (Hurley-Keller+ 1998)J/AJ/115/1856 : Dwarf Cepheids in Carina (Mateo+, 1998)J/AJ/114/1458 : The Carina Dwarf (Mighell 1997)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/146/141https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/146/141http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/146/141https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/146/141https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/146/141http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/146/141GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/146/141/table2 (Properties of the RR Lyrae stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/146/141/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/146/141/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/146/141/table2?GETtext/xml+votable180.050000true99.03513306-51.293030.005555555555555556Cone search capability for table J/AJ/146/141/table3 (Properties of the anomalous Cepheid stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/146/141/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/146/141/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/146/141/table3?GETtext/xml+votable180.050000true99.18569889-51.036240.005555555555555556Cone search capability for table J/AJ/146/141/table4 (Properties of the dwarf Cepheid stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/146/141/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/146/141/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/146/141/table4?GETtext/xml+votable180.050000true99.49558306-51.220038890.005555555555555556Cone search capability for table J/AJ/146/141/table5 (Properties of the miscellaneous periodic variables)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/146/141/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/146/141/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/146/141/table5?GETtext/xml+votable180.050000true99.709-51.342861110.0055555555555555566/39094 39095 39097 39100 39101https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/146/141?format=asciiOpticaldefaultJ/AJ/146/141/table2Properties of the RR Lyrae starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameRR Lyrae star identification (RRL-NN) <[VM2013] RRL-NN> in Simbadmeta.id;meta.maincharRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.main<Bmag>Mean B-band magnitudemagphot.mag;em.opt.Bfloato_<Bmag>Number of Bmag observationsmeta.numberint<Vmag>Mean V-band magnitudemagphot.mag;em.opt.Vfloato_<Vmag>Number of Vmag observationsmeta.numberintBampThe B-band amplitudemagphot.mag;em.opt.BfloatVampThe V-band amplitudemagphot.mag;em.opt.VfloatPerPerioddtime.periodfloatE(B-V)The (B-V) color excessmagphot.color.excessfloatType1[ab c] RR Lyrae type (RRab or RRc)meta.code;src.varchar[SMS86]Name in Dall'Ora et al. 2003 (J/AJ/126/197)meta.idcharType2[ab cd] RR Lyrae type (RRab, RRc, RRd) from Dall'Ora et al. 2003 (J/AJ/126/197)meta.code;src.varcharPer2? Period in Dall'Ora et al. 2003 (J/AJ/126/197)dtime.periodfloatnullableSimbadSimbad column added by the CDSmeta.ref.urlcharJ/AJ/146/141/table3Properties of the anomalous Cepheid starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameCepheid star identification (AC-NN) <[VM2013] AC-NN> in Simbadmeta.id;meta.maincharRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.main<Bmag>Mean B-band magnitudemagphot.mag;em.opt.Bfloato_<Bmag>Number of Bmag observationsmeta.numberint<Vmag>Mean V-band magnitudemagphot.mag;em.opt.Vfloato_<Vmag>Number of Vmag observationsmeta.numberintBampThe B-band amplitudemagphot.mag;em.opt.BfloatVampThe V-band amplitudemagphot.mag;em.opt.VfloatPerPerioddtime.periodfloatE(B-V)The (B-V) color excessmagphot.color.excessfloat[SMS86]Name in Dall'Ora et al. 2003 (J/AJ/126/197)meta.idcharPer2? Period in Dall'Ora et al. 2003 (J/AJ/126/197)dtime.periodfloatnullableSimbadSimbad column added by the CDSmeta.ref.urlcharJ/AJ/146/141/table4Properties of the dwarf Cepheid starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameDwarf Cepheid star identification (DC-NNN) <[VM2013] DC-NNN> in Simbadmeta.id;meta.maincharRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.main<Bmag>Mean B-band magnitudemagphot.mag;em.opt.Bfloato_<Bmag>Number of Bmag observationsmeta.numberint<Vmag>Mean V-band magnitudemagphot.mag;em.opt.Vfloato_<Vmag>Number of Vmag observationsmeta.numberintBampThe B-band amplitudemagphot.mag;em.opt.BfloatVampThe V-band amplitudemagphot.mag;em.opt.VfloatPerPerioddtime.perioddoublePer2? Alternative period; possible aliasdtime.perioddoublenullableE(B-V)The (B-V) color excessmagphot.color.excessfloatMode[F] Pulsation Mode (F=Fundamental)meta.notechar[MHN98]Name in Mateo et al. 1988 (J/AJ/115/1856)meta.idcharPer3? Period in Mateo et al. 1988 (J/AJ/115/1856)dtime.perioddoublenullableJ/AJ/146/141/table5Properties of the miscellaneous periodic variablesPerPerioddtime.periodfloatTypeVariable typemeta.code;src.varcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNamePeriodic variable star identification (Mis-N) <[VM2013] Mis-N> in Simbadmeta.notecharRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.main<Bmag>Mean B-band magnitudemagphot.mag;em.opt.Bfloato_<Bmag>Number of Bmag observationsmeta.numberint<Vmag>Mean V-band magnitudemagphot.mag;em.opt.Vfloato_<Vmag>Number of Vmag observationsmeta.numberintBampThe B-band amplitudemagphot.mag;em.opt.BfloatVampThe V-band amplitudemagphot.mag;em.opt.VfloatE(B-V)The (B-V) color excessmagphot.color.excessfloat